Pyrotechnic composition



Patented Mar. 7, 19.39 "25 149314 UNITED STATES PATENT OFFICE George J. Schladt, Dover, N. J.

No Drawing. Application February 16, 1938, Serial No. 190,806

9 Claims. (Cl. 52-24) (Granted under the act of March 3,1883, as amended April 30, 1928; 370 0. G. 757) The invention described herein may be manu- The magnesium is preferably coated with linfactured and used by or for the Government for seed oil before being introduced into the compo governmental purposes without the payment to sit1on to insure. its protection a ainst oxidation me of any royalty thereon. while providing a. desirably high candlepower 5 The subject of this invention is a pyrotechnic value and a suitable burning rate.

composition. I claim.

As disclosed in Patent No. 2,035,509 of March 1. A composition consisting of barium nitrate, 31, 1936, a coating and binding agent of parafiln strontium nitrate, magnesium coated with linis used in an illuminating composition comprising seed oil, and a binding agent of one to four permagnesium and nitrates of barium and strontium. cent of a. mixture of linseed oil and castor oil. 10 Storage tests of this composition have shown that A Co pos t on Co s of barium nitrate, the paraflin tends to flow and either segregates Strontium nitrate, magnesium, and a binding or becomes absorbed by the paper containers. agent of one to four percent of a mixture of lin- This results in loss of binding action and also in seed oil and castor oil.

loss of a protective coating for the magnesium A C P n consisting of barium nitrate, 15 so that as a consequence the efiiciency of the strontium nitrate, magnesium coated witha drycomposition is greatly reduced. mg 0 and a binding agent of ne to f r per- The purpose of this invention is to provide a Cent of a mixture of a drying oil and a non-drying coating and binding agent for a pyrotechnic comoil.

position which avoids the above enumerated dis- A Composition consisting of bar um t a e. 20 advantages of paraflin and which will be satiso um trate, magnesium, and a binding factory with respect to candle power, burning agen of one to four percent of a. mixture of a rate and stability. drying l a d a -d y n oil.

The improved agent consists of a mixture of a A pyrote composition including m drying oil, such as linseed or tung oil, and anonneslum coated with linseed oil, and a binding 25 drying or semi-drying oil, such as castor oil or agent consisting of a mixture of linseed oil and soya bean oil. When a drying oil alone is used castor oil. the solidification process proceeds too rapidly A py o c p on c uding magresulting in shrinkage faults and cavities. When nesium coated'with a drying oil, and a binding a non-drying oil alone is used thesolidification agent consisting of a mixture of a drying oil and 30 process proceeds too slowly resulting in unsatisa non-drying oil.

factory binding of the surfaces of the ingredients. 7 A pyrotec composition including m A composition having the following ingredients 1185111111 coated W a d y ng Oil. has given excellent results: 8. A pyrotechnic composition including a bind- Percent ing agent consisting of a mixture of linseed oil 35,

Barium nitr 36-40 and castor oil. strontium nitrate 6- 8 9. A pyrotechnic composition including a bind- Magnesium, coated 50-54 ing agent consisting of a mixture of a drying oil Castor oil 4 and a non-dryin oil.

- GEORGE J. SCHLADT. 40

40 Linseed M1 7 

